// Copyright 2019 Google LLC.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

syntax = "proto3";

package google.cloud.recommender.v1;

import "google/api/annotations.proto";
import "google/api/client.proto";
import "google/api/field_behavior.proto";
import "google/api/resource.proto";
import "google/cloud/recommender/v1/recommendation.proto";

option csharp_namespace = "Google.Cloud.Recommender.V1";
option go_package = "google.golang.org/genproto/googleapis/cloud/recommender/v1;recommender";
option java_multiple_files = true;
option java_outer_classname = "RecommenderProto";
option java_package = "com.google.cloud.recommender.v1";
option objc_class_prefix = "CREC";

// Provides recommendations for cloud customers for various categories like
// performance optimization, cost savings, reliability, feature discovery, etc.
// These recommendations are generated automatically based on analysis of user
// resources, configuration and monitoring metrics.
service Recommender {
  option (google.api.default_host) = "recommender.googleapis.com";
  option (google.api.oauth_scopes) = "https://www.googleapis.com/auth/cloud-platform";

  // Lists recommendations for a Cloud project. Requires the recommender.*.list
  // IAM permission for the specified recommender.
  rpc ListRecommendations(ListRecommendationsRequest) returns (ListRecommendationsResponse) {
    option (google.api.http) = {
      get: "/v1/{parent=projects/*/locations/*/recommenders/*}/recommendations"
    };
    option (google.api.method_signature) = "parent";
    option (google.api.method_signature) = "parent,filter";
  }

  // Gets the requested recommendation. Requires the recommender.*.get
  // IAM permission for the specified recommender.
  rpc GetRecommendation(GetRecommendationRequest) returns (Recommendation) {
    option (google.api.http) = {
      get: "/v1/{name=projects/*/locations/*/recommenders/*/recommendations/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Mark the Recommendation State as Claimed. Users can use this method to
  // indicate to the Recommender API that they are starting to apply the
  // recommendation themselves. This stops the recommendation content from being
  // updated.
  //
  // MarkRecommendationClaimed can be applied to recommendations in CLAIMED,
  // SUCCEEDED, FAILED, or ACTIVE state.
  //
  // Requires the recommender.*.update IAM permission for the specified
  // recommender.
  rpc MarkRecommendationClaimed(MarkRecommendationClaimedRequest) returns (Recommendation) {
    option (google.api.http) = {
      post: "/v1/{name=projects/*/locations/*/recommenders/*/recommendations/*}:markClaimed"
      body: "*"
    };
    option (google.api.method_signature) = "name,state_metadata,etag";
  }

  // Mark the Recommendation State as Succeeded. Users can use this method to
  // indicate to the Recommender API that they have applied the recommendation
  // themselves, and the operation was successful. This stops the recommendation
  // content from being updated.
  //
  // MarkRecommendationSucceeded can be applied to recommendations in ACTIVE,
  // CLAIMED, SUCCEEDED, or FAILED state.
  //
  // Requires the recommender.*.update IAM permission for the specified
  // recommender.
  rpc MarkRecommendationSucceeded(MarkRecommendationSucceededRequest) returns (Recommendation) {
    option (google.api.http) = {
      post: "/v1/{name=projects/*/locations/*/recommenders/*/recommendations/*}:markSucceeded"
      body: "*"
    };
    option (google.api.method_signature) = "name,state_metadata,etag";
  }

  // Mark the Recommendation State as Failed. Users can use this method to
  // indicate to the Recommender API that they have applied the recommendation
  // themselves, and the operation failed. This stops the recommendation content
  // from being updated.
  //
  // MarkRecommendationFailed can be applied to recommendations in ACTIVE,
  // CLAIMED, SUCCEEDED, or FAILED state.
  //
  // Requires the recommender.*.update IAM permission for the specified
  // recommender.
  rpc MarkRecommendationFailed(MarkRecommendationFailedRequest) returns (Recommendation) {
    option (google.api.http) = {
      post: "/v1/{name=projects/*/locations/*/recommenders/*/recommendations/*}:markFailed"
      body: "*"
    };
    option (google.api.method_signature) = "name,state_metadata,etag";
  }
}

// Request for the `ListRecommendations` method.
message ListRecommendationsRequest {
  // Required. The container resource on which to execute the request.
  // Acceptable formats:
  //
  // 1.
  // "projects/[PROJECT_NUMBER]/locations/[LOCATION]/recommenders/[RECOMMENDER_ID]",
  //
  // LOCATION here refers to GCP Locations:
  // https://cloud.google.com/about/locations/
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "recommender.googleapis.com/Recommender"
    }
  ];

  // Optional. The maximum number of results to return from this request.  Non-positive
  // values are ignored. If not specified, the server will determine the number
  // of results to return.
  int32 page_size = 2 [(google.api.field_behavior) = OPTIONAL];

  // Optional. If present, retrieves the next batch of results from the preceding call to
  // this method. `page_token` must be the value of `next_page_token` from the
  // previous response. The values of other method parameters must be identical
  // to those in the previous call.
  string page_token = 3 [(google.api.field_behavior) = OPTIONAL];

  // Filter expression to restrict the recommendations returned. Supported
  // filter fields: state_info.state
  // Eg: `state_info.state:"DISMISSED" or state_info.state:"FAILED"
  string filter = 5;
}

// Response to the `ListRecommendations` method.
message ListRecommendationsResponse {
  // The set of recommendations for the `parent` resource.
  repeated Recommendation recommendations = 1;

  // A token that can be used to request the next page of results. This field is
  // empty if there are no additional results.
  string next_page_token = 2;
}

// Request to the `GetRecommendation` method.
message GetRecommendationRequest {
  // Required. Name of the recommendation.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "recommender.googleapis.com/Recommendation"
    }
  ];
}

// Request for the `MarkRecommendationClaimed` Method.
message MarkRecommendationClaimedRequest {
  // Required. Name of the recommendation.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "recommender.googleapis.com/Recommendation"
    }
  ];

  // State properties to include with this state. Overwrites any existing
  // `state_metadata`.
  // Keys must match the regex /^[a-z0-9][a-z0-9_.-]{0,62}$/.
  // Values must match the regex /^[a-zA-Z0-9_./-]{0,255}$/.
  map<string, string> state_metadata = 2;

  // Required. Fingerprint of the Recommendation. Provides optimistic locking.
  string etag = 3 [(google.api.field_behavior) = REQUIRED];
}

// Request for the `MarkRecommendationSucceeded` Method.
message MarkRecommendationSucceededRequest {
  // Required. Name of the recommendation.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "recommender.googleapis.com/Recommendation"
    }
  ];

  // State properties to include with this state. Overwrites any existing
  // `state_metadata`.
  // Keys must match the regex /^[a-z0-9][a-z0-9_.-]{0,62}$/.
  // Values must match the regex /^[a-zA-Z0-9_./-]{0,255}$/.
  map<string, string> state_metadata = 2;

  // Required. Fingerprint of the Recommendation. Provides optimistic locking.
  string etag = 3 [(google.api.field_behavior) = REQUIRED];
}

// Request for the `MarkRecommendationFailed` Method.
message MarkRecommendationFailedRequest {
  // Required. Name of the recommendation.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "recommender.googleapis.com/Recommendation"
    }
  ];

  // State properties to include with this state. Overwrites any existing
  // `state_metadata`.
  // Keys must match the regex /^[a-z0-9][a-z0-9_.-]{0,62}$/.
  // Values must match the regex /^[a-zA-Z0-9_./-]{0,255}$/.
  map<string, string> state_metadata = 2;

  // Required. Fingerprint of the Recommendation. Provides optimistic locking.
  string etag = 3 [(google.api.field_behavior) = REQUIRED];
}